To work in State Grid, you need to sign a labor contract to become a formal employee. State Grid Corporation of China offers two types of labor contracts: fixed-term contracts and open-ended contracts. The term of a fixed-term contract is more than one year and not more than three years. Whether to renew the contract upon expiration needs to be decided by both parties through consultation. An open-ended contract has no specific term, but it is stipulated that employees should submit their resignation application to the company one month in advance, otherwise the company will notify employees to terminate the contract one month in advance.